Question

Doubt 3

Answer 1

Ok.. this one was realllllllllyyyyyyy heated discussion!!!

Answer 2

I argued.. that the current in the middle wire MUST be

EMF / 2 = 4 /2 = 2 As

and there fore

F = i lB = 2 *1 * 2 = 4 N

Answer 3

But they said.. that the other resistors come into picture too

the professor modelled the middle wire (f 2 ohmes) as a battery of emf 4 V and the 2 ohm being the internal resistance..

and then calculated the current in the circuit.. by reducing the circuirt